I first heard "In einem kühlen Grunde", an old German folksong by Friedrich Glück (1793-1840) (melody) and Joseph Freiherr von Eichendorff (lyrics), sung by the King's Singers on their LP "Die King's Singers singen deutsche Volkslieder". I also have in my possession a very beautiful version on a Comedian Harmonists recording. In Germany this song can also generally be found as a standard in mixed choirs. The version I play and sing can be found in Die schönsten Liebeslieder
At one time in my life, this was a very personal song in that I could wholeheartedly climb into it's mood. Namely that of plunging into a musical or military life after the depths of a broken love affair.